Removable water-cooled slag pot



April 18, 1939.

H. F. GIBBS REMOVABLE WATER-COOLED SLAG POT 1938 2 Sheets-Sheet 1 Snow;

Filed Feb. 25,

April 1939- I H. F. GIBBS 2,154,980

I REMOVABLE WATER-COOLED SLAG POT Filed Feb. 25, 1938 2 Sheets-Sheet 2Patented Apr. 18, 1939 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a removable, watercooled slag pot, the generalobject of the invention being to provide means for facilitating theremoval of slag from the draft chamber of an open hearth furnace and toprevent crystallization of the slag in the chamber, the warping of thesteel walls at the outside of the chamber and to prevent the fire bricklining from sticking to the pot.

The invention also consists in certain other features of construction,combination and arrangement of the several parts, to be hereinafterfully described, illustrated in the accompanying drawings andspecifically pointed out in the appended claims.

In describing the invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Fig. 1 is a top plan view of the pot.

Fig. 2 is a longitudinal sectional view thereof.

Fig. 3 is a transverse sectional view through the chamber with the potin place.

Fig. 4 is an end view of the pot.

Fig. 5 is a fragmentary side view of the sloping end of the pot.

In these drawings, the numeral l indicates the brick arch of the draftchamber of the furnace, which rests on the steel plates 2, supported bythe steel walls 3. The pot comprises the side walls 4, the bottom 5 andthe sloping end wall 6. Each of these walls are formed separate fromeach other and each wall is of double Walled construction to provide awater space 1. The side and end walls rest on the bottom wall. Plates 835 are fastened to the edges of the bottom wall at the ends thereof andextend upwardly to engage the side walls to help hold these side wallsin place and bolts 9 having nuts I 0 at their ends, detachably connectthe parts together, the bolts being separated from the water spaces, asshown. Some of these bolts pass through the plates 8. An inlet pipe llcommunicates with each water space and an outlet pipe I2 is providedwith each space, these pipes being connected with suitable inlet andoutlet means for providing a continuous supply of water to the spaces.Grooves [3 are formed in the parts to receive certain of the pipes. Afire-brick lining I4 is provided for the pot, as shown, in Fig. 3.

As is well known, the slag which drips from the furnace, falls into thedraft chamber and crystallizes and fills the chamber, and much time andlabor is required to chisel the slag from the 55 chamber when itaccumulates in a solid mass in the chamber. This water-cooled potcatches the slag and greatly reduces crystallization thereof and byplacing the pot on a steel buggy, the pot can be easily removed byremoving the front wall of the furnace and pulling the buggy out of thechamber. Then the sides and end of the pot are removed by removing thebolts and then the slag can be removed from the bottom member by the useof a crane.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction,combination and arrangement of the several parts, provided such changesfall within the scope of the appended claims.

What I claim and desire to protect by Letters Patent is:

1. A slag pot for a furnace adapted to be placed on a buggy comprising,a hollow bottom member having its ends open outwardly of its end-wallsand aligned apertures in its opposite side-walls communicating with theopenings in the ends thereof, hollow side-walls resting on the bottommember and having their ends open outwardly of their end-walls andapertures in their sidewalls communicating with the openings in the endsthereof, hollow end-walls disposed between the side-walls and resting onthe bottom member, said end-walls having their ends open outwardly oftheir end-walls and communicating with apertures in the side-wallsthereof, plates secured to the outer sides of the side-walls adjacenttheir lower corners and having apertures therein registering with theapertures in the sidewalls of the bottom member, elongated boltsdisposed in the open ends of the bottom member and extending through theapertures in the side-walls of the bottom member and aforesaid plates,nuts threadedly disposed on the opposite ends of the bolts, elongatedbolts disposed in the open ends of the side-walls and extending throughthe sidewalls thereof, nuts threadedly disposed on the opposite ends ofthe bolts, independent inlet and outlet water connections communicatingwith the interiors of the hollow members, and a lining disposed againstthe inner sides of the hollow members of the pot.

2. A slag pot of the character described comprising hollow membershaving outwardly disposed openings beyond their ends and between theirouter walls, elongated bolts extending through the openings in the endsof the hollow members and protruding beyond their outer walls, means onthe free ends of the bolts for securing the hollow members together anda lining bearing against the inner walls of the hollow members.

HARRY FULTON GIBBS.

